Pedal device for fire-doors.



A. G. ELVIN & F. W. MARTIN. PEDAL DEVICE FOR FIRE DOORS. APPLICATIONFILED NOV. 13. 1913.

1,148,581 Patented Aug. 3, 1915.

r v 2 SHEET$-$HEET I- WITNESSES INVENTORS.

M14 *dfM BY A TTOR/VEY A. G. ELVIN & F. W. MARTIN. PEDAL DEVICE FOR FIREDOORS. APPLICATION FILED,NOV 13. 1913 1,148,581 a Patented Aug. 3, 1915.

2 SHEETS-SHEET 2- ALBERT G. ELVIN, 0F SOMERVILLE, NEW JERSEY, ANDFREDERICK W. MARTIN, OF

' NEW YORK, N. Y.; SAID MARTIN ASSIGNOR T0 SAID ELVIN'.

PEDAL DEVICE FOR FIRE-DOORS. I

To all whom it may concern:

Be it known that we, ALBERT G. ELVIN and FRE ERICK WVQMARTIN, bothcitizens of the United States, and residents, respectively,'ofSomerville, in the county of Somerset and State of New Jersey, and theborough of Manhattan, in the city, county, and State of New York, haveinvented a certain new and useful Improvement in Pedal Devices for Fire-Doors, of which improvement the following is a specification.

This invention relates to apparatus for controlling the operation offurnace doors, and more'particularly the fire doors of a locomotiveboiler, the principal object being to provide an improved pedal devicehaving adjustable members whereby the same may be readily applied todiflerenttypes of ex1sting locomotives, and be easily operated by thefoot of. the fireman to open the controlling valve of a fluid pressureapparatus for actuating the fi're door. The improvement claimed ishereinafter fully set forth.

In the accompanying drawings: Figure 1 isla front elevation of one formof locomotive fire door apparatus embodying our improvement; Fig. 2, aside viewof the pedal device with a part shown in vertlcal section; Fig.3, a similar view showlng a modification in which the length of thelever arm is adjustable; Fig; 4, a detail view of the swivel joint,partly in section;-

Fig. 5, a detail view of the end of the clamping portion of the leverarm;' and Figs. 6 and 7, a plan and side view, respectively,

partly in'section, and showing a modification.

According to the construction shown, the

improvement is exemplified as applied in connection with a fluidpressure apparatus the admission of fluid to the pipe, 11, and

for operating the fire doors of a locomotive boiler, which isillustrated in Fig. 1, as comprising a cylinder, 8,"containing a pis tonfor actuating the doors, 9, and a valve casing, 10, containing a valvefor controlling the cylinder. The valve casing is'mounted on, or formedintegral with, a casting, 13, supported on a bracket, 12, from the doorframe or boiler sheet, and having a projecting portion, 14, to which maybe pivoted a lever having an arm, 15, adapted'to engage and operate thestem, 22, of the valve. The

other arm, 18, of the pedal lever extends Specification of LettersPatent;

down toward the deck. of the locomotive, and isprovided with a head, 19,having a horizontal opening in which the tread bar, 20, of the tread,21, is slidably supported.

A plurality of notches may be formed in the bar, 20, and a weighted pin,23, mounted in the head, 19, is adapted to engage with I Patented Aug.3, 1915. I Application filed November 13, 1913. Serial N 0. 800,731. l l

be provided, turning upon vertical pin, 17,

the engaging faces ofthe joint being formed with radial teeth orcorrugations, 16. There is suflicient clearance beneath the head of theswivel pin, 17, to allow the upper part to be raised far enough todisengage the teeth'and rotate the arm laterally to, any desiredposition. When the parts are in place, the teeth or corrugationsmesh to"gether and serve to hold the arm in the position to which it is adjustedas the weight; of the pedal is sufiicient to prevent slipping of thecorrugated faces upon each other.

On account of the height of the decks of different locomotives, avertical adjustment may be desirable, and this may be obtained by makingthe pedal .armof adjustable length, as indicated in Fig. 3, .in whichthe arm is composed of two telescoping sections, 18 and 18", the taperedend of the outer or .tubular member, 18, being slit and provided with anut-for clamping the members together at the desired position. Toprevent the stem member, 18", from rotating in the tubular member, 18,apin J and slot connection, 18, may be employed.

'In Figs. 6 and 7, a modification is shown,

in which the bracket, 13, carrying the valve casing, 10, is providedwith a fan shaped projection, 25, having notches at its periphery, andon which is fulcrumed the pedal lever, 18 having extension, 24,supported on the bracket and pivoted thereon by means of the pin, 26.The end of the arm, 24, engages the valve stem, 22, for actuating thecontrol valve and this also serves to hold the pivot of the arm in placeand prevent its removal unless the valve is taken-out. The pedal levermay be adjust- .ed laterally by raising same from a notch and thenturning the arm on its pivot to any other notch desired, the opening forthe pin, 26, being flared downward toallow for this movement. The pedallever, 18, may be provided with the same adjustable tread and the samevertical adjustment as shown in Fig. 3.

. The device is readily operated by the fireman by simply pressing thetread with his foot, and-thereby turning the pedal lever upon itsfulcrum on the bracket, and opening the control valve each time that thefire man desires to deliver a shovel fulof coal to the furnace. He mayalso readily adjust the pedal lever and tread to any. position above thedeck to suit his convenience.

.It will now be seen that we have provideda simple construction of pedaldevice for fire doors, which may be easily adjusted either vertically,longitudinally, or laterally, to suit different conditions, and may bereadily applied to the different existing types of locomotives.

Having now described our invention,

- what we-claim as new and desire to secure crumed thereon forcontrolling the operation of the door, and having an arm extending intoclose proximity to the deck, said arm being laterally adjustable, and atread carried at the end of said arm.

3. In a fire door apparatus, the combina tion with a support,-of a pedallever fulcrumed thereon for controlling the operationjof the door,.andhaving an arm extending into close proximity to the deck,

said arm having a swivel oint for lateral adjustment, and a treadcarried at the end of said arm.

' 4. In a fire door apparatus, the combination with a support, of a.pedal lever fulcrumed thereon for controlling the operation of thedoor, and having an arm extending into close proximity to. the-deck,said arm having a swivel joint with engaging corrugated faces and avertical pin, and a tread carried at the end-of said arm.

5. In a fire door apparatus, the combination with a support, of a pedalleverful-' crumed thereon for controlling the operation of the door, andhaving an arm extending into close proximity to the deck,'and alongitudinally adjustable tread slidably mounted on said arm.

6. In a fire door apparatus, the combination with a support, of a pedallever fulcrumed thereon for controlling the operation of the door, andhaving an arm extending into close proximity to the deck, said armhaving a vertical adjustment, and a tread carried at the end of saidarm.

7. In a fire door apparatus, the combinat1on with a support, of a pedallever fulcrumed thereon for controlling the operation of the door, andhaving an arm extending into close proximity to-the deck, said arm beingformed in adjustable sections, and a tread carried at the end of saidarm.

8. In a fire door apparatus, the combinat1on with a motor and a controlvalve therefor, of a supporting bracket, a pedal lever 'fulcrumed onsaid bracket for actuating sa1d valve, and having an arm' extending downnear the deck, and an adjustable tread carried at the lower end of saidarm.

9. In a fire door apparatus, the combination with a motor and a controlvalve-therefor, of a supporting bracket, a pedal lever fulcrumed on saidbracket for actuating said valve, and having an arm extending down nearthe deck, saidarm being laterally adjustable, and a longitudinallyadjustable tread carried at the lower end of said arm.

In testimony whereof we have hereunto set our hands.

ALBERT G. ELVIN. FREDERICK W. MARTIN.

Witnesses:

JOHN L. MOHUN, W. 1100x1112.

